Select the correct answer with respect to the given network:
1
-I1R1 - I2R2- I3R3 - I4R4 + E2 + E1 = 0
2
-I1R1 - I2R2 - I3R3 - I4R4 - E2 - E1 = 0
3
-I1R1 - I2R2 + I3R3 - I4R4 - E2 + E1 = 0
4
-I1R1 - I2R2 + I3R3 - I4R4 = E2 + E1
5
Question Not Attempted